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0 item @ $0.00  

Sodalite (feldspathoid)

#BM47335

Sodalite (feldspathoid)

#BM47335
Availability
Sold
Size
6.5 x 4.5 x 4 cm - Sm Cabinet 
Formula
Na4Si3Al3O12Cl (RRUFF)
Locality
Itaju do Colônia, Bahia, Brazil

Deep blue crystalline mass of Sodalite, a member of the feldspathoid group.  The feldspathoids are formed under silca poor conditions. Like a feldspar, it is also a framework silicate. Pure sodalite is colorless, the blue is caused by an imurity. Unlike a feldspar member, Sodalite crystallizes in the cubic system.

Sodalite

Formula
Na4Si3Al3O12Cl 
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Disseminated 
Cleavage
Poor, None, None 
Luster
Vitreous - Greasy 
Color
azure blue, white, pink, gray, green 
Streak
white 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Conchoidal 
Hardness

Data courtesy of Webmineral.

Collection
McConlogue Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Sodalite
On Dakota Matrix
Other Available Sodalite
WebMineral
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Mindat
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